Water-mixing valve



Nov. 13, 1928. 1 1,691,197

A. T. JOHANSON WATER MIXING VALVE Filed Feb. 29, 1928' 2 Sheets-Sheet l NEWS, 1928. 1,691,197

A. T. JOHANSON WATER MIXING VALVE Filed Feb. 29, 1928 2 Sheets-Sheet 2 Patented Nov. 13, 1928.

UNITED STATES T. JOHANSON, OF CHICAGO,ILLINOIS.

v WATER-MIXING VALVE.

Application filed February 29, 1928. Serial No. 257,829.

In apartment houses, hotels and similar establishments, which are supplied with hot water from a central heating plant, it is desirable to temper or control the tenmerature of such water automatically by mixing relatively cold water therewith, whereby the water reaching the user will at no time be unduly heated or converted into steam.

The present invention aims to'provide a suitable structure for the proper and eflicient mixing of the waters of different temperatures, thus securing the desired result specified above, as well as obtaining an economy in the consumption of fuel.

A further aim of the invention is to supply a device of this character which is relatively inexpensive to manufacture, which operates efficiently, which is unlikely to become deranged in action, and which is composed of relatively few and simple parts.

To enable those acquainted with this art to fully understand the invention and the manner in which the new valve functions, in the accompanying drawings, forming a part of this specification, and throughout the several views of which like reference numerals have been employed to designate the same parts, a present, preferred embodiment of the invention has been illustrated in detail.

'In these drawings,

Fig. 1 is an elevation of the valve mechanism;

Fig. 2 is a vertical cross-section on line 2-2 of Fig. 3;

Fig. 3 is a vertical section on line 3-3 of Fig. 4; and

Fig. 4 is a plan view'of the appliance.

By reference to these drawings, it will be perceived that the novel and improved watermixing valve comprises a casing or shell 11 with an interior chamber 12, into the lower part of which the hot water is admitted through a pipe 13 connected to any suitable source of supply.

Opposite the pipe 13, the chamber has a. discharge passage 14, for the mixed or tempered water, connected to a delivery-pipe 15.

The compartment 12 is traversed by a hol-- low partition 16 extending upwardly from the floor or bottom wall of the chamber and terminating short of the top wall, leaving a suitable passage 17 between the top of the partition and such top wall, the lower part of such division wall being enlarged at 18 and communicating at one end with a cold-water admission or inlet pipe 19 equipped with a spring-closing valve 21, the stem 22 of which may be depressed to open the valve by means of a cam or eccentric 23 on the shaft 24 of an electric motor (not shown) housed in the part 25 of the main casing.

Such motor and the valve which it is designed to actuate are of common and well known construction, and their details of structure need not therefore be further described here.

In order that the flow of cold water from the hollow interior of the partition-wall 16 into the chamber 12 of casing 11 may be regulated or controlled manually, a port 26 in the upper part of one side wall of the partition is equipped with a hand-operated valve 27 fitted with a hand-wheel or handle 28.

WVhen the valve is once properly set, or partially or wholly opened for the particular installation involved, ordinarily no further attention need be paid to the same, the provision of such valve allowing a structure of one size to be employed satisfactorily in relations differing more or less radically in their require ments.

An adjustable, thermostatic Aqua-stat has a tube 29 projecting into the chamber 14., so that it is subject to the heat condition of the discharging water, the device having three electric terminals 31, 32 and 33 connected to companion terminals. 34 of the electric motor. I

Such Aqua-stat is of well known com- .mercial construction, thus not requiring description in detail, and isso arranged that when the water about the tube 29.is lowered in temperature it will complete an electric circuit to the electric motor, whereby to turn the shaft 24 and eccentric 23 one hundred and eighty degrees, causing the opening of the valve 21, which will remain open until the temperature of the water in the compartment 14 lowers sufiiciently to cause the Aqua-stat to again close a circuit through the motor, whereby the shaft of the latter turns anotherone hundred and eighty degrees, permitting the valve 21 to close under the action of its spring.

Thus, bysuccessive half revolutions of the electric-motor shaft, the control of the motor being effected by the Aqua-stat,'the temperature of the water delivered through the appliance may be maintained within relatively small variations or changes.

The hot water, in passing up one side of the hollow partition 16 containing the cold tende water, cools the former somewhat and has its own temperature reduced more or less.

An efiicient and effective mixing of the two waters occurs around the valve 27 because the cold water issuing through the port 26 naturally tends to descend and the hot water is forced down on this side of the partition, after having passed over its top through the gap 17, whereby the waters of the two temperatures become eificiently blended.

From the foregoing it will be appreciated that, by introducing the cold water into the mixin valve through a hollow partition exc? across the latter in such a way as to require the hot water to travel along both sides and across the top of such partition and by allowing the discharge of the cold water from the partition into the mixing chamber through a port near its top, an arrangement is suppliedwhich mixes or commingles the waters from the two sources in an entirely satisfactory and eifective way.

Those acquainted with this art will understand that the invention is susceptible of a variety of'embodiments, and is not, therefore, limited to the particular incorporation in physical form de icted in the drawings and described hereina ve; or, stated somewhat differently, many more or less radical changes may be made in the structure illustrated and described Without departing from the invention as defined by the appended claims and without the sacrifice of any of its material advantages and benefits.

I claim: v

1. In a water-mixing valve, the combina-- tion of a hollow valve-casing having a hollow partition extended across the chamber thereof but terminating short of the top wall of the casing, the interior of said partition having a discharge port near the top of one sidewall thereof, means to admit water into the lower portion of said chamber at the side,

of said partition opposite said discharge port, means to admit water into said partition, means to deliver the mixed waters from the lower portion of said chamber on the same side of said partition as the discharge port of said partition, and means subject to the temperature of t-he'mixed delivering water controlling the How of one of said water supplies to said valve.

2 In a water-mixing valve, the combination of a hollow valve-casing having a hollow partition extended across the chamber thereof but terminating short of the top wall of said casing, the interiorof said partition having a discharge port near the top of one side wall thereof, means to control the degree of opening of said discharge port, means to admit water into the lower portion of said chamber at the side of said partition opposite its discharge port, means to admit water into said partition, means to deliver the mixed waters from the lower portion of said chamber on the same side of said partition as the discharge port of the latter, and means subject to the temperature of the mixed delivering water controlling the flow of one of said water supplies to said valve.

3. In a water-mixing valve, the combination of a hollow valve-casing having a hollow partition extended across the chamber thereof but terminating short of one wall of the casing, the interior ofsaid partition having a side port discharging into said valve-casing chamber, means to admlt water into said chamber at one side of said partition, means I to admit water into said partition, means to deliver the mixed waters from said casing on the side of said partition opposite said chamber-inlet, and means subject to the temperature of the delivering mixed waters controlling the flow of the water entering said said chamber at one side of said partition,

means to admit Water into said partition, means to deliver the mixed Waters from said casing-chamber at the side of said partition opposite said chamber-inlet, and means subject to the temperature of the delivering mixed waters controlling the flow of the water entering said partition.

In witness whereof I have hereunto set my hand and seal.

ADOLPH 'r. JOHANSON. 

